drivers/net/wireless/ath/ath9k/calib.c

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "ath9k.h"
  18
  19 /* We can tune this as we go by monitoring really low values */
  20 #define ATH9K_NF_TOO_LOW        -60
  21
  22 /* AR5416 may return very high value (like -31 dBm), in those cases the nf
  23  * is incorrect and we should use the static NF value. Later we can try to
  24  * find out why they are reporting these values */
  25
  26 static bool ath9k_hw_nf_in_range(struct ath_hw *ah, s16 nf)
  27 {
  28         if (nf > ATH9K_NF_TOO_LOW) {
  29                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
  30                         "noise floor value detected (%d) is "
  31                         "lower than what we think is a "
  32                         "reasonable value (%d)\n",
  33                         nf, ATH9K_NF_TOO_LOW);
  34                 return false;
  35         }
  36         return true;
  37 }
  38
  39 static int16_t ath9k_hw_get_nf_hist_mid(int16_t *nfCalBuffer)
  40 {
  41         int16_t nfval;
  42         int16_t sort[ATH9K_NF_CAL_HIST_MAX];
  43         int i, j;
  44
  45         for (i = 0; i < ATH9K_NF_CAL_HIST_MAX; i++)
  46                 sort[i] = nfCalBuffer[i];
  47
  48         for (i = 0; i < ATH9K_NF_CAL_HIST_MAX - 1; i++) {
  49                 for (j = 1; j < ATH9K_NF_CAL_HIST_MAX - i; j++) {
  50                         if (sort[j] > sort[j - 1]) {
  51                                 nfval = sort[j];
  52                                 sort[j] = sort[j - 1];
  53                                 sort[j - 1] = nfval;
  54                         }
  55                 }
  56         }
  57         nfval = sort[(ATH9K_NF_CAL_HIST_MAX - 1) >> 1];
  58
  59         return nfval;
  60 }
  61
  62 static void ath9k_hw_update_nfcal_hist_buffer(struct ath9k_nfcal_hist *h,
  63                                               int16_t *nfarray)
  64 {
  65         int i;
  66
  67         for (i = 0; i < NUM_NF_READINGS; i++) {
  68                 h[i].nfCalBuffer[h[i].currIndex] = nfarray[i];
  69
  70                 if (++h[i].currIndex >= ATH9K_NF_CAL_HIST_MAX)
  71                         h[i].currIndex = 0;
  72
  73                 if (h[i].invalidNFcount > 0) {
  74                         if (nfarray[i] < AR_PHY_CCA_MIN_BAD_VALUE ||
  75                             nfarray[i] > AR_PHY_CCA_MAX_HIGH_VALUE) {
  76                                 h[i].invalidNFcount = ATH9K_NF_CAL_HIST_MAX;
  77                         } else {
  78                                 h[i].invalidNFcount--;
  79                                 h[i].privNF = nfarray[i];
  80                         }
  81                 } else {
  82                         h[i].privNF =
  83                                 ath9k_hw_get_nf_hist_mid(h[i].nfCalBuffer);
  84                 }
  85         }
  86         return;
  87 }
  88
  89 static void ath9k_hw_do_getnf(struct ath_hw *ah,
  90                               int16_t nfarray[NUM_NF_READINGS])
  91 {
  92         int16_t nf;
  93
  94         if (AR_SREV_9280_10_OR_LATER(ah))
  95                 nf = MS(REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
  96         else
  97                 nf = MS(REG_READ(ah, AR_PHY_CCA), AR_PHY_MINCCA_PWR);
  98
  99         if (nf & 0x100)
 100                 nf = 0 - ((nf ^ 0x1ff) + 1);
 101         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 102                 "NF calibrated [ctl] [chain 0] is %d\n", nf);
 103         nfarray[0] = nf;
 104
 105         if (!AR_SREV_9285(ah)) {
 106                 if (AR_SREV_9280_10_OR_LATER(ah))
 107                         nf = MS(REG_READ(ah, AR_PHY_CH1_CCA),
 108                                         AR9280_PHY_CH1_MINCCA_PWR);
 109                 else
 110                         nf = MS(REG_READ(ah, AR_PHY_CH1_CCA),
 111                                         AR_PHY_CH1_MINCCA_PWR);
 112
 113                 if (nf & 0x100)
 114                         nf = 0 - ((nf ^ 0x1ff) + 1);
 115                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 116                                 "NF calibrated [ctl] [chain 1] is %d\n", nf);
 117                 nfarray[1] = nf;
 118
 119                 if (!AR_SREV_9280(ah) && !AR_SREV_9287(ah)) {
 120                         nf = MS(REG_READ(ah, AR_PHY_CH2_CCA),
 121                                         AR_PHY_CH2_MINCCA_PWR);
 122                         if (nf & 0x100)
 123                                 nf = 0 - ((nf ^ 0x1ff) + 1);
 124                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 125                                 "NF calibrated [ctl] [chain 2] is %d\n", nf);
 126                         nfarray[2] = nf;
 127                 }
 128         }
 129
 130         if (AR_SREV_9280_10_OR_LATER(ah))
 131                 nf = MS(REG_READ(ah, AR_PHY_EXT_CCA),
 132                         AR9280_PHY_EXT_MINCCA_PWR);
 133         else
 134                 nf = MS(REG_READ(ah, AR_PHY_EXT_CCA),
 135                         AR_PHY_EXT_MINCCA_PWR);
 136
 137         if (nf & 0x100)
 138                 nf = 0 - ((nf ^ 0x1ff) + 1);
 139         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 140                 "NF calibrated [ext] [chain 0] is %d\n", nf);
 141         nfarray[3] = nf;
 142
 143         if (!AR_SREV_9285(ah)) {
 144                 if (AR_SREV_9280_10_OR_LATER(ah))
 145                         nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA),
 146                                         AR9280_PHY_CH1_EXT_MINCCA_PWR);
 147                 else
 148                         nf = MS(REG_READ(ah, AR_PHY_CH1_EXT_CCA),
 149                                         AR_PHY_CH1_EXT_MINCCA_PWR);
 150
 151                 if (nf & 0x100)
 152                         nf = 0 - ((nf ^ 0x1ff) + 1);
 153                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 154                                 "NF calibrated [ext] [chain 1] is %d\n", nf);
 155                 nfarray[4] = nf;
 156
 157                 if (!AR_SREV_9280(ah) && !AR_SREV_9287(ah)) {
 158                         nf = MS(REG_READ(ah, AR_PHY_CH2_EXT_CCA),
 159                                         AR_PHY_CH2_EXT_MINCCA_PWR);
 160                         if (nf & 0x100)
 161                                 nf = 0 - ((nf ^ 0x1ff) + 1);
 162                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 163                                 "NF calibrated [ext] [chain 2] is %d\n", nf);
 164                         nfarray[5] = nf;
 165                 }
 166         }
 167 }
 168
 169 static bool getNoiseFloorThresh(struct ath_hw *ah,
 170                                 enum ieee80211_band band,
 171                                 int16_t *nft)
 172 {
 173         switch (band) {
 174         case IEEE80211_BAND_5GHZ:
 175                 *nft = (int8_t)ah->eep_ops->get_eeprom(ah, EEP_NFTHRESH_5);
 176                 break;
 177         case IEEE80211_BAND_2GHZ:
 178                 *nft = (int8_t)ah->eep_ops->get_eeprom(ah, EEP_NFTHRESH_2);
 179                 break;
 180         default:
 181                 BUG_ON(1);
 182                 return false;
 183         }
 184
 185         return true;
 186 }
 187
 188 static void ath9k_hw_setup_calibration(struct ath_hw *ah,
 189                                        struct ath9k_cal_list *currCal)
 190 {
 191         REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(0),
 192                       AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX,
 193                       currCal->calData->calCountMax);
 194
 195         switch (currCal->calData->calType) {
 196         case IQ_MISMATCH_CAL:
 197                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_IQ);
 198                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 199                         "starting IQ Mismatch Calibration\n");
 200                 break;
 201         case ADC_GAIN_CAL:
 202                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_GAIN);
 203                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 204                         "starting ADC Gain Calibration\n");
 205                 break;
 206         case ADC_DC_CAL:
 207                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_PER);
 208                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 209                         "starting ADC DC Calibration\n");
 210                 break;
 211         case ADC_DC_INIT_CAL:
 212                 REG_WRITE(ah, AR_PHY_CALMODE, AR_PHY_CALMODE_ADC_DC_INIT);
 213                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 214                         "starting Init ADC DC Calibration\n");
 215                 break;
 216         }
 217
 218         REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
 219                     AR_PHY_TIMING_CTRL4_DO_CAL);
 220 }
 221
 222 static void ath9k_hw_reset_calibration(struct ath_hw *ah,
 223                                        struct ath9k_cal_list *currCal)
 224 {
 225         int i;
 226
 227         ath9k_hw_setup_calibration(ah, currCal);
 228
 229         currCal->calState = CAL_RUNNING;
 230
 231         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 232                 ah->meas0.sign[i] = 0;
 233                 ah->meas1.sign[i] = 0;
 234                 ah->meas2.sign[i] = 0;
 235                 ah->meas3.sign[i] = 0;
 236         }
 237
 238         ah->cal_samples = 0;
 239 }
 240
 241 static bool ath9k_hw_per_calibration(struct ath_hw *ah,
 242                                      struct ath9k_channel *ichan,
 243                                      u8 rxchainmask,
 244                                      struct ath9k_cal_list *currCal)
 245 {
 246         bool iscaldone = false;
 247
 248         if (currCal->calState == CAL_RUNNING) {
 249                 if (!(REG_READ(ah, AR_PHY_TIMING_CTRL4(0)) &
 250                       AR_PHY_TIMING_CTRL4_DO_CAL)) {
 251
 252                         currCal->calData->calCollect(ah);
 253                         ah->cal_samples++;
 254
 255                         if (ah->cal_samples >= currCal->calData->calNumSamples) {
 256                                 int i, numChains = 0;
 257                                 for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 258                                         if (rxchainmask & (1 << i))
 259                                                 numChains++;
 260                                 }
 261
 262                                 currCal->calData->calPostProc(ah, numChains);
 263                                 ichan->CalValid |= currCal->calData->calType;
 264                                 currCal->calState = CAL_DONE;
 265                                 iscaldone = true;
 266                         } else {
 267                                 ath9k_hw_setup_calibration(ah, currCal);
 268                         }
 269                 }
 270         } else if (!(ichan->CalValid & currCal->calData->calType)) {
 271                 ath9k_hw_reset_calibration(ah, currCal);
 272         }
 273
 274         return iscaldone;
 275 }
 276
 277 /* Assumes you are talking about the currently configured channel */
 278 static bool ath9k_hw_iscal_supported(struct ath_hw *ah,
 279                                      enum ath9k_cal_types calType)
 280 {
 281         struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
 282
 283         switch (calType & ah->supp_cals) {
 284         case IQ_MISMATCH_CAL: /* Both 2 GHz and 5 GHz support OFDM */
 285                 return true;
 286         case ADC_GAIN_CAL:
 287         case ADC_DC_CAL:
 288                 if (!(conf->channel->band == IEEE80211_BAND_2GHZ &&
 289                       conf_is_ht20(conf)))
 290                         return true;
 291                 break;
 292         }
 293         return false;
 294 }
 295
 296 static void ath9k_hw_iqcal_collect(struct ath_hw *ah)
 297 {
 298         int i;
 299
 300         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 301                 ah->totalPowerMeasI[i] +=
 302                         REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
 303                 ah->totalPowerMeasQ[i] +=
 304                         REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
 305                 ah->totalIqCorrMeas[i] +=
 306                         (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
 307                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 308                         "%d: Chn %d pmi=0x%08x;pmq=0x%08x;iqcm=0x%08x;\n",
 309                         ah->cal_samples, i, ah->totalPowerMeasI[i],
 310                         ah->totalPowerMeasQ[i],
 311                         ah->totalIqCorrMeas[i]);
 312         }
 313 }
 314
 315 static void ath9k_hw_adc_gaincal_collect(struct ath_hw *ah)
 316 {
 317         int i;
 318
 319         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 320                 ah->totalAdcIOddPhase[i] +=
 321                         REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
 322                 ah->totalAdcIEvenPhase[i] +=
 323                         REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
 324                 ah->totalAdcQOddPhase[i] +=
 325                         REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
 326                 ah->totalAdcQEvenPhase[i] +=
 327                         REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
 328
 329                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 330                         "%d: Chn %d oddi=0x%08x; eveni=0x%08x; "
 331                         "oddq=0x%08x; evenq=0x%08x;\n",
 332                         ah->cal_samples, i,
 333                         ah->totalAdcIOddPhase[i],
 334                         ah->totalAdcIEvenPhase[i],
 335                         ah->totalAdcQOddPhase[i],
 336                         ah->totalAdcQEvenPhase[i]);
 337         }
 338 }
 339
 340 static void ath9k_hw_adc_dccal_collect(struct ath_hw *ah)
 341 {
 342         int i;
 343
 344         for (i = 0; i < AR5416_MAX_CHAINS; i++) {
 345                 ah->totalAdcDcOffsetIOddPhase[i] +=
 346                         (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_0(i));
 347                 ah->totalAdcDcOffsetIEvenPhase[i] +=
 348                         (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_1(i));
 349                 ah->totalAdcDcOffsetQOddPhase[i] +=
 350                         (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_2(i));
 351                 ah->totalAdcDcOffsetQEvenPhase[i] +=
 352                         (int32_t) REG_READ(ah, AR_PHY_CAL_MEAS_3(i));
 353
 354                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 355                         "%d: Chn %d oddi=0x%08x; eveni=0x%08x; "
 356                         "oddq=0x%08x; evenq=0x%08x;\n",
 357                         ah->cal_samples, i,
 358                         ah->totalAdcDcOffsetIOddPhase[i],
 359                         ah->totalAdcDcOffsetIEvenPhase[i],
 360                         ah->totalAdcDcOffsetQOddPhase[i],
 361                         ah->totalAdcDcOffsetQEvenPhase[i]);
 362         }
 363 }
 364
 365 static void ath9k_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
 366 {
 367         u32 powerMeasQ, powerMeasI, iqCorrMeas;
 368         u32 qCoffDenom, iCoffDenom;
 369         int32_t qCoff, iCoff;
 370         int iqCorrNeg, i;
 371
 372         for (i = 0; i < numChains; i++) {
 373                 powerMeasI = ah->totalPowerMeasI[i];
 374                 powerMeasQ = ah->totalPowerMeasQ[i];
 375                 iqCorrMeas = ah->totalIqCorrMeas[i];
 376
 377                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 378                         "Starting IQ Cal and Correction for Chain %d\n",
 379                         i);
 380
 381                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 382                         "Orignal: Chn %diq_corr_meas = 0x%08x\n",
 383                         i, ah->totalIqCorrMeas[i]);
 384
 385                 iqCorrNeg = 0;
 386
 387                 if (iqCorrMeas > 0x80000000) {
 388                         iqCorrMeas = (0xffffffff - iqCorrMeas) + 1;
 389                         iqCorrNeg = 1;
 390                 }
 391
 392                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 393                         "Chn %d pwr_meas_i = 0x%08x\n", i, powerMeasI);
 394                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 395                         "Chn %d pwr_meas_q = 0x%08x\n", i, powerMeasQ);
 396                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, "iqCorrNeg is 0x%08x\n",
 397                         iqCorrNeg);
 398
 399                 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 128;
 400                 qCoffDenom = powerMeasQ / 64;
 401
 402                 if (powerMeasQ != 0) {
 403                         iCoff = iqCorrMeas / iCoffDenom;
 404                         qCoff = powerMeasI / qCoffDenom - 64;
 405                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 406                                 "Chn %d iCoff = 0x%08x\n", i, iCoff);
 407                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 408                                 "Chn %d qCoff = 0x%08x\n", i, qCoff);
 409
 410                         iCoff = iCoff & 0x3f;
 411                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 412                                 "New: Chn %d iCoff = 0x%08x\n", i, iCoff);
 413                         if (iqCorrNeg == 0x0)
 414                                 iCoff = 0x40 - iCoff;
 415
 416                         if (qCoff > 15)
 417                                 qCoff = 15;
 418                         else if (qCoff <= -16)
 419                                 qCoff = 16;
 420
 421                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 422                                 "Chn %d : iCoff = 0x%x  qCoff = 0x%x\n",
 423                                 i, iCoff, qCoff);
 424
 425                         REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
 426                                       AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF,
 427                                       iCoff);
 428                         REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4(i),
 429                                       AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF,
 430                                       qCoff);
 431                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 432                                 "IQ Cal and Correction done for Chain %d\n",
 433                                 i);
 434                 }
 435         }
 436
 437         REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4(0),
 438                     AR_PHY_TIMING_CTRL4_IQCORR_ENABLE);
 439 }
 440
 441 static void ath9k_hw_adc_gaincal_calibrate(struct ath_hw *ah, u8 numChains)
 442 {
 443         u32 iOddMeasOffset, iEvenMeasOffset, qOddMeasOffset, qEvenMeasOffset;
 444         u32 qGainMismatch, iGainMismatch, val, i;
 445
 446         for (i = 0; i < numChains; i++) {
 447                 iOddMeasOffset = ah->totalAdcIOddPhase[i];
 448                 iEvenMeasOffset = ah->totalAdcIEvenPhase[i];
 449                 qOddMeasOffset = ah->totalAdcQOddPhase[i];
 450                 qEvenMeasOffset = ah->totalAdcQEvenPhase[i];
 451
 452                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 453                         "Starting ADC Gain Cal for Chain %d\n", i);
 454
 455                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 456                         "Chn %d pwr_meas_odd_i = 0x%08x\n", i,
 457                         iOddMeasOffset);
 458                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 459                         "Chn %d pwr_meas_even_i = 0x%08x\n", i,
 460                         iEvenMeasOffset);
 461                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 462                         "Chn %d pwr_meas_odd_q = 0x%08x\n", i,
 463                         qOddMeasOffset);
 464                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 465                         "Chn %d pwr_meas_even_q = 0x%08x\n", i,
 466                         qEvenMeasOffset);
 467
 468                 if (iOddMeasOffset != 0 && qEvenMeasOffset != 0) {
 469                         iGainMismatch =
 470                                 ((iEvenMeasOffset * 32) /
 471                                  iOddMeasOffset) & 0x3f;
 472                         qGainMismatch =
 473                                 ((qOddMeasOffset * 32) /
 474                                  qEvenMeasOffset) & 0x3f;
 475
 476                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 477                                 "Chn %d gain_mismatch_i = 0x%08x\n", i,
 478                                 iGainMismatch);
 479                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 480                                 "Chn %d gain_mismatch_q = 0x%08x\n", i,
 481                                 qGainMismatch);
 482
 483                         val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
 484                         val &= 0xfffff000;
 485                         val |= (qGainMismatch) | (iGainMismatch << 6);
 486                         REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
 487
 488                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 489                                 "ADC Gain Cal done for Chain %d\n", i);
 490                 }
 491         }
 492
 493         REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
 494                   REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
 495                   AR_PHY_NEW_ADC_GAIN_CORR_ENABLE);
 496 }
 497
 498 static void ath9k_hw_adc_dccal_calibrate(struct ath_hw *ah, u8 numChains)
 499 {
 500         u32 iOddMeasOffset, iEvenMeasOffset, val, i;
 501         int32_t qOddMeasOffset, qEvenMeasOffset, qDcMismatch, iDcMismatch;
 502         const struct ath9k_percal_data *calData =
 503                 ah->cal_list_curr->calData;
 504         u32 numSamples =
 505                 (1 << (calData->calCountMax + 5)) * calData->calNumSamples;
 506
 507         for (i = 0; i < numChains; i++) {
 508                 iOddMeasOffset = ah->totalAdcDcOffsetIOddPhase[i];
 509                 iEvenMeasOffset = ah->totalAdcDcOffsetIEvenPhase[i];
 510                 qOddMeasOffset = ah->totalAdcDcOffsetQOddPhase[i];
 511                 qEvenMeasOffset = ah->totalAdcDcOffsetQEvenPhase[i];
 512
 513                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 514                         "Starting ADC DC Offset Cal for Chain %d\n", i);
 515
 516                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 517                         "Chn %d pwr_meas_odd_i = %d\n", i,
 518                         iOddMeasOffset);
 519                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 520                         "Chn %d pwr_meas_even_i = %d\n", i,
 521                         iEvenMeasOffset);
 522                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 523                         "Chn %d pwr_meas_odd_q = %d\n", i,
 524                         qOddMeasOffset);
 525                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 526                         "Chn %d pwr_meas_even_q = %d\n", i,
 527                         qEvenMeasOffset);
 528
 529                 iDcMismatch = (((iEvenMeasOffset - iOddMeasOffset) * 2) /
 530                                numSamples) & 0x1ff;
 531                 qDcMismatch = (((qOddMeasOffset - qEvenMeasOffset) * 2) /
 532                                numSamples) & 0x1ff;
 533
 534                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 535                         "Chn %d dc_offset_mismatch_i = 0x%08x\n", i,
 536                         iDcMismatch);
 537                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 538                         "Chn %d dc_offset_mismatch_q = 0x%08x\n", i,
 539                         qDcMismatch);
 540
 541                 val = REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i));
 542                 val &= 0xc0000fff;
 543                 val |= (qDcMismatch << 12) | (iDcMismatch << 21);
 544                 REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(i), val);
 545
 546                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 547                         "ADC DC Offset Cal done for Chain %d\n", i);
 548         }
 549
 550         REG_WRITE(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0),
 551                   REG_READ(ah, AR_PHY_NEW_ADC_DC_GAIN_CORR(0)) |
 552                   AR_PHY_NEW_ADC_DC_OFFSET_CORR_ENABLE);
 553 }
 554
 555 /* This is done for the currently configured channel */
 556 bool ath9k_hw_reset_calvalid(struct ath_hw *ah)
 557 {
 558         struct ieee80211_conf *conf = &ah->ah_sc->hw->conf;
 559         struct ath9k_cal_list *currCal = ah->cal_list_curr;
 560
 561         if (!ah->curchan)
 562                 return true;
 563
 564         if (!AR_SREV_9100(ah) && !AR_SREV_9160_10_OR_LATER(ah))
 565                 return true;
 566
 567         if (currCal == NULL)
 568                 return true;
 569
 570         if (currCal->calState != CAL_DONE) {
 571                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 572                         "Calibration state incorrect, %d\n",
 573                         currCal->calState);
 574                 return true;
 575         }
 576
 577         if (!ath9k_hw_iscal_supported(ah, currCal->calData->calType))
 578                 return true;
 579
 580         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 581                 "Resetting Cal %d state for channel %u\n",
 582                 currCal->calData->calType, conf->channel->center_freq);
 583
 584         ah->curchan->CalValid &= ~currCal->calData->calType;
 585         currCal->calState = CAL_WAITING;
 586
 587         return false;
 588 }
 589
 590 void ath9k_hw_start_nfcal(struct ath_hw *ah)
 591 {
 592         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
 593                     AR_PHY_AGC_CONTROL_ENABLE_NF);
 594         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
 595                     AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
 596         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
 597 }
 598
 599 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
 600 {
 601         struct ath9k_nfcal_hist *h;
 602         int i, j;
 603         int32_t val;
 604         const u32 ar5416_cca_regs[6] = {
 605                 AR_PHY_CCA,
 606                 AR_PHY_CH1_CCA,
 607                 AR_PHY_CH2_CCA,
 608                 AR_PHY_EXT_CCA,
 609                 AR_PHY_CH1_EXT_CCA,
 610                 AR_PHY_CH2_EXT_CCA
 611         };
 612         u8 chainmask;
 613
 614         if (AR_SREV_9285(ah))
 615                 chainmask = 0x9;
 616         else if (AR_SREV_9280(ah) || AR_SREV_9287(ah))
 617                 chainmask = 0x1B;
 618         else
 619                 chainmask = 0x3F;
 620
 621         h = ah->nfCalHist;
 622
 623         for (i = 0; i < NUM_NF_READINGS; i++) {
 624                 if (chainmask & (1 << i)) {
 625                         val = REG_READ(ah, ar5416_cca_regs[i]);
 626                         val &= 0xFFFFFE00;
 627                         val |= (((u32) (h[i].privNF) << 1) & 0x1ff);
 628                         REG_WRITE(ah, ar5416_cca_regs[i], val);
 629                 }
 630         }
 631
 632         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 633                     AR_PHY_AGC_CONTROL_ENABLE_NF);
 634         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 635                     AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
 636         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
 637
 638         for (j = 0; j < 1000; j++) {
 639                 if ((REG_READ(ah, AR_PHY_AGC_CONTROL) &
 640                      AR_PHY_AGC_CONTROL_NF) == 0)
 641                         break;
 642                 udelay(10);
 643         }
 644
 645         for (i = 0; i < NUM_NF_READINGS; i++) {
 646                 if (chainmask & (1 << i)) {
 647                         val = REG_READ(ah, ar5416_cca_regs[i]);
 648                         val &= 0xFFFFFE00;
 649                         val |= (((u32) (-50) << 1) & 0x1ff);
 650                         REG_WRITE(ah, ar5416_cca_regs[i], val);
 651                 }
 652         }
 653 }
 654
 655 int16_t ath9k_hw_getnf(struct ath_hw *ah,
 656                        struct ath9k_channel *chan)
 657 {
 658         int16_t nf, nfThresh;
 659         int16_t nfarray[NUM_NF_READINGS] = { 0 };
 660         struct ath9k_nfcal_hist *h;
 661         struct ieee80211_channel *c = chan->chan;
 662
 663         chan->channelFlags &= (~CHANNEL_CW_INT);
 664         if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) {
 665                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 666                         "NF did not complete in calibration window\n");
 667                 nf = 0;
 668                 chan->rawNoiseFloor = nf;
 669                 return chan->rawNoiseFloor;
 670         } else {
 671                 ath9k_hw_do_getnf(ah, nfarray);
 672                 nf = nfarray[0];
 673                 if (getNoiseFloorThresh(ah, c->band, &nfThresh)
 674                     && nf > nfThresh) {
 675                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
 676                                 "noise floor failed detected; "
 677                                 "detected %d, threshold %d\n",
 678                                 nf, nfThresh);
 679                         chan->channelFlags |= CHANNEL_CW_INT;
 680                 }
 681         }
 682
 683         h = ah->nfCalHist;
 684
 685         ath9k_hw_update_nfcal_hist_buffer(h, nfarray);
 686         chan->rawNoiseFloor = h[0].privNF;
 687
 688         return chan->rawNoiseFloor;
 689 }
 690
 691 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah)
 692 {
 693         int i, j;
 694         s16 noise_floor;
 695
 696         if (AR_SREV_9280(ah))
 697                 noise_floor = AR_PHY_CCA_MAX_AR9280_GOOD_VALUE;
 698         else if (AR_SREV_9285(ah))
 699                 noise_floor = AR_PHY_CCA_MAX_AR9285_GOOD_VALUE;
 700         else
 701                 noise_floor = AR_PHY_CCA_MAX_AR5416_GOOD_VALUE;
 702
 703         for (i = 0; i < NUM_NF_READINGS; i++) {
 704                 ah->nfCalHist[i].currIndex = 0;
 705                 ah->nfCalHist[i].privNF = noise_floor;
 706                 ah->nfCalHist[i].invalidNFcount =
 707                         AR_PHY_CCA_FILTERWINDOW_LENGTH;
 708                 for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) {
 709                         ah->nfCalHist[i].nfCalBuffer[j] = noise_floor;
 710                 }
 711         }
 712 }
 713
 714 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan)
 715 {
 716         s16 nf;
 717
 718         if (chan->rawNoiseFloor == 0)
 719                 nf = -96;
 720         else
 721                 nf = chan->rawNoiseFloor;
 722
 723         if (!ath9k_hw_nf_in_range(ah, nf))
 724                 nf = ATH_DEFAULT_NOISE_FLOOR;
 725
 726         return nf;
 727 }
 728
 729 static void ath9k_olc_temp_compensation(struct ath_hw *ah)
 730 {
 731         u32 rddata, i;
 732         int delta, currPDADC, regval;
 733
 734         rddata = REG_READ(ah, AR_PHY_TX_PWRCTRL4);
 735
 736         currPDADC = MS(rddata, AR_PHY_TX_PWRCTRL_PD_AVG_OUT);
 737
 738         if (ah->eep_ops->get_eeprom(ah, EEP_DAC_HPWR_5G))
 739                 delta = (currPDADC - ah->initPDADC + 4) / 8;
 740         else
 741                 delta = (currPDADC - ah->initPDADC + 5) / 10;
 742
 743         if (delta != ah->PDADCdelta) {
 744                 ah->PDADCdelta = delta;
 745                 for (i = 1; i < AR9280_TX_GAIN_TABLE_SIZE; i++) {
 746                         regval = ah->originalGain[i] - delta;
 747                         if (regval < 0)
 748                                 regval = 0;
 749
 750                         REG_RMW_FIELD(ah, AR_PHY_TX_GAIN_TBL1 + i * 4,
 751                                         AR_PHY_TX_GAIN, regval);
 752                 }
 753         }
 754 }
 755
 756 static void ath9k_hw_9271_pa_cal(struct ath_hw *ah)
 757 {
 758         u32 regVal;
 759         unsigned int i;
 760         u32 regList [][2] = {
 761                 { 0x786c, 0 },
 762                 { 0x7854, 0 },
 763                 { 0x7820, 0 },
 764                 { 0x7824, 0 },
 765                 { 0x7868, 0 },
 766                 { 0x783c, 0 },
 767                 { 0x7838, 0 } ,
 768                 { 0x7828, 0 } ,
 769         };
 770
 771         for (i = 0; i < ARRAY_SIZE(regList); i++)
 772                 regList[i][1] = REG_READ(ah, regList[i][0]);
 773
 774         regVal = REG_READ(ah, 0x7834);
 775         regVal &= (~(0x1));
 776         REG_WRITE(ah, 0x7834, regVal);
 777         regVal = REG_READ(ah, 0x9808);
 778         regVal |= (0x1 << 27);
 779         REG_WRITE(ah, 0x9808, regVal);
 780
 781         /* 786c,b23,1, pwddac=1 */
 782         REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
 783         /* 7854, b5,1, pdrxtxbb=1 */
 784         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
 785         /* 7854, b7,1, pdv2i=1 */
 786         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
 787         /* 7854, b8,1, pddacinterface=1 */
 788         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
 789         /* 7824,b12,0, offcal=0 */
 790         REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
 791         /* 7838, b1,0, pwddb=0 */
 792         REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
 793         /* 7820,b11,0, enpacal=0 */
 794         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
 795         /* 7820,b25,1, pdpadrv1=0 */
 796         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 0);
 797         /* 7820,b24,0, pdpadrv2=0 */
 798         REG_RMW_FIELD(ah, AR9285_AN_RF2G1,AR9285_AN_RF2G1_PDPADRV2,0);
 799         /* 7820,b23,0, pdpaout=0 */
 800         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
 801         /* 783c,b14-16,7, padrvgn2tab_0=7 */
 802         REG_RMW_FIELD(ah, AR9285_AN_RF2G8,AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
 803         /*
 804          * 7838,b29-31,0, padrvgn1tab_0=0
 805          * does not matter since we turn it off
 806          */
 807         REG_RMW_FIELD(ah, AR9285_AN_RF2G7,AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
 808
 809         REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9271_AN_RF2G3_CCOMP, 0xfff);
 810
 811         /* Set:
 812          * localmode=1,bmode=1,bmoderxtx=1,synthon=1,
 813          * txon=1,paon=1,oscon=1,synthon_force=1
 814          */
 815         REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
 816         udelay(30);
 817         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0);
 818
 819         /* find off_6_1; */
 820         for (i = 6; i >= 0; i--) {
 821                 regVal = REG_READ(ah, 0x7834);
 822                 regVal |= (1 << (20 + i));
 823                 REG_WRITE(ah, 0x7834, regVal);
 824                 udelay(1);
 825                 //regVal = REG_READ(ah, 0x7834);
 826                 regVal &= (~(0x1 << (20 + i)));
 827                 regVal |= (MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9)
 828                             << (20 + i));
 829                 REG_WRITE(ah, 0x7834, regVal);
 830         }
 831
 832         /*  Empirical offset correction  */
 833 #if 0
 834         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0x20);
 835 #endif
 836
 837         regVal = REG_READ(ah, 0x7834);
 838         regVal |= 0x1;
 839         REG_WRITE(ah, 0x7834, regVal);
 840         regVal = REG_READ(ah, 0x9808);
 841         regVal &= (~(0x1 << 27));
 842         REG_WRITE(ah, 0x9808, regVal);
 843
 844         for (i = 0; i < ARRAY_SIZE(regList); i++)
 845                 REG_WRITE(ah, regList[i][0], regList[i][1]);
 846 }
 847
 848 static inline void ath9k_hw_9285_pa_cal(struct ath_hw *ah)
 849 {
 850
 851         u32 regVal;
 852         int i, offset, offs_6_1, offs_0;
 853         u32 ccomp_org, reg_field;
 854         u32 regList[][2] = {
 855                 { 0x786c, 0 },
 856                 { 0x7854, 0 },
 857                 { 0x7820, 0 },
 858                 { 0x7824, 0 },
 859                 { 0x7868, 0 },
 860                 { 0x783c, 0 },
 861                 { 0x7838, 0 },
 862         };
 863
 864         if (AR_SREV_9285_11(ah)) {
 865                 REG_WRITE(ah, AR9285_AN_TOP4, (AR9285_AN_TOP4_DEFAULT | 0x14));
 866                 udelay(10);
 867         }
 868
 869         for (i = 0; i < ARRAY_SIZE(regList); i++)
 870                 regList[i][1] = REG_READ(ah, regList[i][0]);
 871
 872         regVal = REG_READ(ah, 0x7834);
 873         regVal &= (~(0x1));
 874         REG_WRITE(ah, 0x7834, regVal);
 875         regVal = REG_READ(ah, 0x9808);
 876         regVal |= (0x1 << 27);
 877         REG_WRITE(ah, 0x9808, regVal);
 878
 879         REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
 880         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
 881         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
 882         REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
 883         REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
 884         REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
 885         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
 886         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 1);
 887         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV2, 0);
 888         REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
 889         REG_RMW_FIELD(ah, AR9285_AN_RF2G8, AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
 890         REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
 891         ccomp_org = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_CCOMP);
 892         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, 7);
 893
 894         REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
 895         udelay(30);
 896         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, 0);
 897         REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 0);
 898
 899         for (i = 6; i > 0; i--) {
 900                 regVal = REG_READ(ah, 0x7834);
 901                 regVal |= (1 << (19 + i));
 902                 REG_WRITE(ah, 0x7834, regVal);
 903                 udelay(1);
 904                 regVal = REG_READ(ah, 0x7834);
 905                 regVal &= (~(0x1 << (19 + i)));
 906                 reg_field = MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9);
 907                 regVal |= (reg_field << (19 + i));
 908                 REG_WRITE(ah, 0x7834, regVal);
 909         }
 910
 911         REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, 1);
 912         udelay(1);
 913         reg_field = MS(REG_READ(ah, AR9285_AN_RF2G9), AR9285_AN_RXTXBB1_SPARE9);
 914         REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, reg_field);
 915         offs_6_1 = MS(REG_READ(ah, AR9285_AN_RF2G6), AR9285_AN_RF2G6_OFFS);
 916         offs_0   = MS(REG_READ(ah, AR9285_AN_RF2G3), AR9285_AN_RF2G3_PDVCCOMP);
 917
 918         offset = (offs_6_1<<1) | offs_0;
 919         offset = offset - 0;
 920         offs_6_1 = offset>>1;
 921         offs_0 = offset & 1;
 922
 923         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_OFFS, offs_6_1);
 924         REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9285_AN_RF2G3_PDVCCOMP, offs_0);
 925
 926         regVal = REG_READ(ah, 0x7834);
 927         regVal |= 0x1;
 928         REG_WRITE(ah, 0x7834, regVal);
 929         regVal = REG_READ(ah, 0x9808);
 930         regVal &= (~(0x1 << 27));
 931         REG_WRITE(ah, 0x9808, regVal);
 932
 933         for (i = 0; i < ARRAY_SIZE(regList); i++)
 934                 REG_WRITE(ah, regList[i][0], regList[i][1]);
 935
 936         REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9285_AN_RF2G6_CCOMP, ccomp_org);
 937
 938         if (AR_SREV_9285_11(ah))
 939                 REG_WRITE(ah, AR9285_AN_TOP4, AR9285_AN_TOP4_DEFAULT);
 940
 941 }
 942
 943 bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
 944                         u8 rxchainmask, bool longcal)
 945 {
 946         bool iscaldone = true;
 947         struct ath9k_cal_list *currCal = ah->cal_list_curr;
 948
 949         if (currCal &&
 950             (currCal->calState == CAL_RUNNING ||
 951              currCal->calState == CAL_WAITING)) {
 952                 iscaldone = ath9k_hw_per_calibration(ah, chan,
 953                                                      rxchainmask, currCal);
 954                 if (iscaldone) {
 955                         ah->cal_list_curr = currCal = currCal->calNext;
 956
 957                         if (currCal->calState == CAL_WAITING) {
 958                                 iscaldone = false;
 959                                 ath9k_hw_reset_calibration(ah, currCal);
 960                         }
 961                 }
 962         }
 963
 964         /* Do NF cal only at longer intervals */
 965         if (longcal) {
 966                 /* Do periodic PAOffset Cal */
 967                 if (AR_SREV_9271(ah))
 968                         ath9k_hw_9271_pa_cal(ah);
 969                 else if (AR_SREV_9285_11_OR_LATER(ah))
 970                         ath9k_hw_9285_pa_cal(ah);
 971
 972                 if (OLC_FOR_AR9280_20_LATER || OLC_FOR_AR9287_10_LATER)
 973                         ath9k_olc_temp_compensation(ah);
 974
 975                 /* Get the value from the previous NF cal and update history buffer */
 976                 ath9k_hw_getnf(ah, chan);
 977
 978                 /*
 979                  * Load the NF from history buffer of the current channel.
 980                  * NF is slow time-variant, so it is OK to use a historical value.
 981                  */
 982                 ath9k_hw_loadnf(ah, ah->curchan);
 983
 984                 ath9k_hw_start_nfcal(ah);
 985         }
 986
 987         return iscaldone;
 988 }
 989
 990 static bool ar9285_clc(struct ath_hw *ah, struct ath9k_channel *chan)
 991 {
 992         REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
 993         if (IS_CHAN_HT20(chan)) {
 994                 REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
 995                 REG_SET_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
 996                 REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
 997                             AR_PHY_AGC_CONTROL_FLTR_CAL);
 998                 REG_CLR_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
 999                 REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
1000                 if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
1001                                   AR_PHY_AGC_CONTROL_CAL, 0, AH_WAIT_TIMEOUT)) {
1002                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, "offset "
1003                                 "calibration failed to complete in "
1004                                 "1ms; noisy ??\n");
1005                         return false;
1006                 }
1007                 REG_CLR_BIT(ah, AR_PHY_TURBO, AR_PHY_FC_DYN2040_EN);
1008                 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_PARALLEL_CAL_ENABLE);
1009                 REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
1010         }
1011         REG_CLR_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
1012         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
1013         REG_SET_BIT(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_PD_CAL_ENABLE);
1014         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
1015         if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL,
1016                           0, AH_WAIT_TIMEOUT)) {
1017                 DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE, "offset calibration "
1018                                 "failed to complete in 1ms; noisy ??\n");
1019                 return false;
1020         }
1021
1022         REG_SET_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
1023         REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
1024         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_FLTR_CAL);
1025
1026         return true;
1027 }
1028
1029 bool ath9k_hw_init_cal(struct ath_hw *ah, struct ath9k_channel *chan)
1030 {
1031         if (AR_SREV_9285_12_OR_LATER(ah)) {
1032                 if (!ar9285_clc(ah, chan))
1033                         return false;
1034         } else {
1035                 if (AR_SREV_9280_10_OR_LATER(ah)) {
1036                         if (!AR_SREV_9287_10_OR_LATER(ah))
1037                                 REG_CLR_BIT(ah, AR_PHY_ADC_CTL,
1038                                             AR_PHY_ADC_CTL_OFF_PWDADC);
1039                         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
1040                                     AR_PHY_AGC_CONTROL_FLTR_CAL);
1041                 }
1042
1043                 /* Calibrate the AGC */
1044                 REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1045                           REG_READ(ah, AR_PHY_AGC_CONTROL) |
1046                           AR_PHY_AGC_CONTROL_CAL);
1047
1048                 /* Poll for offset calibration complete */
1049                 if (!ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL,
1050                                    0, AH_WAIT_TIMEOUT)) {
1051                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
1052                                 "offset calibration failed to complete in 1ms; "
1053                                 "noisy environment?\n");
1054                         return false;
1055                 }
1056
1057                 if (AR_SREV_9280_10_OR_LATER(ah)) {
1058                         if (!AR_SREV_9287_10_OR_LATER(ah))
1059                                 REG_SET_BIT(ah, AR_PHY_ADC_CTL,
1060                                             AR_PHY_ADC_CTL_OFF_PWDADC);
1061                         REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
1062                                     AR_PHY_AGC_CONTROL_FLTR_CAL);
1063                 }
1064         }
1065
1066         /* Do PA Calibration */
1067         if (AR_SREV_9285_11_OR_LATER(ah))
1068                 ath9k_hw_9285_pa_cal(ah);
1069
1070         /* Do NF Calibration after DC offset and other calibrations */
1071         REG_WRITE(ah, AR_PHY_AGC_CONTROL,
1072                   REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_NF);
1073
1074         ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
1075
1076         /* Enable IQ, ADC Gain and ADC DC offset CALs */
1077         if (AR_SREV_9100(ah) || AR_SREV_9160_10_OR_LATER(ah)) {
1078                 if (ath9k_hw_iscal_supported(ah, ADC_GAIN_CAL)) {
1079                         INIT_CAL(&ah->adcgain_caldata);
1080                         INSERT_CAL(ah, &ah->adcgain_caldata);
1081                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
1082                                 "enabling ADC Gain Calibration.\n");
1083                 }
1084                 if (ath9k_hw_iscal_supported(ah, ADC_DC_CAL)) {
1085                         INIT_CAL(&ah->adcdc_caldata);
1086                         INSERT_CAL(ah, &ah->adcdc_caldata);
1087                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
1088                                 "enabling ADC DC Calibration.\n");
1089                 }
1090                 if (ath9k_hw_iscal_supported(ah, IQ_MISMATCH_CAL)) {
1091                         INIT_CAL(&ah->iq_caldata);
1092                         INSERT_CAL(ah, &ah->iq_caldata);
1093                         DPRINTF(ah->ah_sc, ATH_DBG_CALIBRATE,
1094                                 "enabling IQ Calibration.\n");
1095                 }
1096
1097                 ah->cal_list_curr = ah->cal_list;
1098
1099                 if (ah->cal_list_curr)
1100                         ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
1101         }
1102
1103         chan->CalValid = 0;
1104
1105         return true;
1106 }
1107
1108 const struct ath9k_percal_data iq_cal_multi_sample = {
1109         IQ_MISMATCH_CAL,
1110         MAX_CAL_SAMPLES,
1111         PER_MIN_LOG_COUNT,
1112         ath9k_hw_iqcal_collect,
1113         ath9k_hw_iqcalibrate
1114 };
1115 const struct ath9k_percal_data iq_cal_single_sample = {
1116         IQ_MISMATCH_CAL,
1117         MIN_CAL_SAMPLES,
1118         PER_MAX_LOG_COUNT,
1119         ath9k_hw_iqcal_collect,
1120         ath9k_hw_iqcalibrate
1121 };
1122 const struct ath9k_percal_data adc_gain_cal_multi_sample = {
1123         ADC_GAIN_CAL,
1124         MAX_CAL_SAMPLES,
1125         PER_MIN_LOG_COUNT,
1126         ath9k_hw_adc_gaincal_collect,
1127         ath9k_hw_adc_gaincal_calibrate
1128 };
1129 const struct ath9k_percal_data adc_gain_cal_single_sample = {
1130         ADC_GAIN_CAL,
1131         MIN_CAL_SAMPLES,
1132         PER_MAX_LOG_COUNT,
1133         ath9k_hw_adc_gaincal_collect,
1134         ath9k_hw_adc_gaincal_calibrate
1135 };
1136 const struct ath9k_percal_data adc_dc_cal_multi_sample = {
1137         ADC_DC_CAL,
1138         MAX_CAL_SAMPLES,
1139         PER_MIN_LOG_COUNT,
1140         ath9k_hw_adc_dccal_collect,
1141         ath9k_hw_adc_dccal_calibrate
1142 };
1143 const struct ath9k_percal_data adc_dc_cal_single_sample = {
1144         ADC_DC_CAL,
1145         MIN_CAL_SAMPLES,
1146         PER_MAX_LOG_COUNT,
1147         ath9k_hw_adc_dccal_collect,
1148         ath9k_hw_adc_dccal_calibrate
1149 };
1150 const struct ath9k_percal_data adc_init_dc_cal = {
1151         ADC_DC_INIT_CAL,
1152         MIN_CAL_SAMPLES,
1153         INIT_LOG_COUNT,
1154         ath9k_hw_adc_dccal_collect,
1155         ath9k_hw_adc_dccal_calibrate
1156 };